Module Name: src
Committed By: ad
Date: Sun Mar 1 21:40:45 UTC 2020
Modified Files:
src/sys/arch/hppa/hppa: pmap.c
Log Message:
Give pmap uvm_objects an empty pagerops to avoid special casing in UVM.
(This use of uvm_object causes a disproportionate amount of work.)
To generate a diff of this commit:
cvs rdiff -u -r1.104 -r1.105 src/sys/arch/hppa/hppa/pmap.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/hppa/hppa/pmap.c
diff -u src/sys/arch/hppa/hppa/pmap.c:1.104 src/sys/arch/hppa/hppa/pmap.c:1.105
--- src/sys/arch/hppa/hppa/pmap.c:1.104 Mon Feb 24 20:42:18 2020
+++ src/sys/arch/hppa/hppa/pmap.c Sun Mar 1 21:40:45 2020
@@ -1,4 +1,4 @@
-/* $NetBSD: pmap.c,v 1.104 2020/02/24 20:42:18 ad Exp $ */
+/* $NetBSD: pmap.c,v 1.105 2020/03/01 21:40:45 ad Exp $ */
/*-
* Copyright (c) 2001, 2002 The NetBSD Foundation, Inc.
@@ -65,7 +65,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.104 2020/02/24 20:42:18 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.105 2020/03/01 21:40:45 ad Exp $");
#include "opt_cputype.h"
@@ -158,6 +158,10 @@ static kmutex_t pmaps_lock;
u_int hppa_prot[8];
u_int sid_counter;
+static const struct uvm_pagerops pmap_pager = {
+ /* nothing */
+};
+
/*
* Page 3-6 of the "PA-RISC 1.1 Architecture and Instruction Set
* Reference Manual" (HP part number 09740-90039) defines equivalent
@@ -696,7 +700,7 @@ pmap_bootstrap(vaddr_t vstart)
memset(kpm, 0, sizeof(*kpm));
rw_init(&kpm->pm_obj_lock);
- uvm_obj_init(&kpm->pm_obj, NULL, false, 1);
+ uvm_obj_init(&kpm->pm_obj, &pmap_pager, false, 1);
uvm_obj_setlock(&kpm->pm_obj, &kpm->pm_obj_lock);
kpm->pm_space = HPPA_SID_KERNEL;
@@ -1059,7 +1063,7 @@ pmap_create(void)
DPRINTF(PDB_FOLLOW|PDB_PMAP, ("%s: pmap = %p\n", __func__, pmap));
rw_init(&pmap->pm_obj_lock);
- uvm_obj_init(&pmap->pm_obj, NULL, false, 1);
+ uvm_obj_init(&pmap->pm_obj, &pmap_pager, false, 1);
uvm_obj_setlock(&pmap->pm_obj, &pmap->pm_obj_lock);
mutex_enter(&pmaps_lock);
